If you are any good with regex you can remove this using body mangling in the Mailing list manager. I had it working on my site albeit briefly, you simply add the regex into the box and low and behold all the mailman added footer disappear

My patterns ended up being to complex, so I do pre-filtering; instead of directing the email straight to FUDforum, I direct it to my PHP filter that removes the duplicated five line signature from the email and replaces it with one occurance (all others are deleted).

To protect things, I actually have a C program that sets the uid/gid to NOBODY and then fork/execs the PHP filter from Sendmail. It works well.

I have integrated FUDforum with MailMan as well, and I pre-filter that email for the list as well. I have setup a chain of PHP filters. Each filter does a single thing. One removes duplicate signatures, another removes leading spaces. I can add additional filters as I see fit without changing the others. These all work the same way. From sendmail, fork/exec a PHP filter as NOBODY, and the last filter in the chain feeds the resulting email to MailMan.

I don't know if anyone else is interested in this, if so I can post some code in the Code Hacks section.

E-mail integration with FUDforum is something many users do, so I think any hacks, patches, tweaks or helper utilities that you have is worth posting. You never know, your tools can end up helping someone and saving them a lot of time. Even if no one uses them, they would be a great reference material.